| 释义 |
single precision floating datum
单精度浮点数
Four contiguous bytes (32 bits)starting on an arbitrary byte boundary. The value of a floating datum is in the approximate range,.29*10**-38 through 1.7*10**38. The precision of a floating datum is approximately one part in 2**23, typically seven decimal digits.
从字节边界开始的4个相继字节(32位)。一个浮点数的数值的大致范围是.
29×10&+{-38}到1.7×10&+{38},其精度约为1/2&+{23},一般为7位十进制数。 |